Magtjler butler



(No Model.)

M. BUTLER. BICYCLE LOOK.

No. 488,526, Patented Oct. 14, 1890. I

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UNITED STATES PATENT OFFICE.

MAGULER BUThER, OF ROCHESTER, NElV YORK, ASSIGNOR OF ONE-HALF;

TO GEORGE E. BRAYER, OF SAME PLACE.

BICYCLE-LOCK.

SPECIFICATION formingpart of Letters Patent No. 438,526, dated October14, 1890.

Application filed April 19, 1890. Serial No. 348.601. (No model.)

To all whom it may concern.-

Be it known that I, MAGULER BUTLER, a citizen of the United States,residing at Rochester, in the county of Monroe and State of New York,have invented certain new and useful Improvements in Stationary Bicycle-Locks'; and I do hereby declare the following to be a full, clear, andexact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same.

The object of the invention is to provide a lock for bicycles andsimilar vehicles that can be conveniently carried as a fixture on themachine and can be easily locked by simply sliding a bolt, and can beautomatically unlocked by withdrawing a retaining-pin from thelocking-bolt; and the invention consists in the matters hereinafterdescribed and pointed out.

In the accompanying drawings, Figure l is an elevation of the lockapplied to the mudguard and locked about the rim, the guard and rimbeing shown in transverse section. Fig. 2 is a side elevation. Fig. 3 isa plan of the device, modified to adapt it to be applied to the fork ofa bicycle; and Fig. 4 is a side elevation of the same, the strap beingomitted.

Numeral 1 indicates the dust-shield, and 2 a strap provided withscrew-threaded ends, said strap being fitted to the shield and havingits ends passed through a cross-bar 11 of the lock and secured by nuts.Said bar is provided with a ring-like attachment 12, having therein arecess forming a receptacle and passageway for a curved bolt 3. 5indicates a spring having one end secured within said passage and theother attached to the bolt 3, the construction being such that thespring is under tension when the bolt isin the position shown in Fig. 1or when the bicycle is locked.

At 13 the ring is provided with an approximately tangential arm madehollow to contain a spring-detent 6. This spring may be applied to thepin or detent in any convenient manner; but in the present instance acoiled spring 7 is made to bear on an arm on the pin and on the interiorwall of the detent- I chamber, and it normally moves the pin toward thering-that is, toward the boltto cause it to engage a notch 14 therein.

4 is a finger-piece attached to the curved sliding bolt, by which thelatter can be moved against the tension of its spring until thespring-detent automatically engages the notch in the bolt and holds itlocked.

To unlock the device, it is only necessary to insert a key in a suitablehole adjacent to the detent, and thereby withdraw said detent fromengagement with the bolt, at the same time compressing the spring of thedetent. As soon as this detent is withdrawn from its seat or notch thespring 5 retracts bolt 3 and holds it withdrawn until it is designedlyforced forward. again by the use of the handle 4.

In the form illustrated in Fig. 1 the recess in the ring is covered by aplate 9, screwed upon the ring in such manner as to cover the recess orpassage in which the spring and bolt are lodged. This plate ispreferably extended over the detent-receptacle, and can be convenientlyfastened in place by screws.

The particular form of detent, key, fingerpiece, or other parts isunessential so long as the practical operation of the device is notsubstantially changed.

It will be noticed that the lock is securely held in an out-of-the-wayplace upon the machine, and that the lock-frame always nearly surroundsthe rim of the wheel, and that the boltrequires but a small movement tolock the wheel, whereupon it is itself automatically locked by thespring-detent.

It willbe understood that to apply the abovedescribed lock to anymachine it is only neces sary to so modify the strap 2 or analogous partas to adapt it to be fastened upon the frame or fixed part of themachine adjacent to the wheel-rim, and so that the ring-receptacle shallpartially surround the rim without interfering with its movement, exceptwhen locked. Thus, as represented in Figs. 3 and 4, the lock is adaptedto be clamped to one member of the fork of an upright machine by across-bar 8 and strap 2; and it also can be applied to a Star or to anyother kind of bicycle, or to any wheeled vehicle by analogous means.

The advantages of the device are that it is always in place, that it canbe locked by simply sliding the bolt, that it is automatically unlockedupon the Withdrawal of a bolt-detent, and that it is simple in structureand not liable to derangement of parts.

Havingthus described my invention, whatI desire to secure by LettersPatent, is

1. The lock consisting of the strap, the recessed ring, the sliding boltlocated in the re cess, and the spring-detent, substantially as setforth.

2. The lock provided with the strap and consisting" of the recessedring, the bolt, the spring-detent, and the spring attached to theMAGULER BUTLER.

Witnesses:

HENRY I-IEDDITOH, HENRY IIUDsoN.

